Tens of thousands of Palestinians surged into Egypt from the Gaza Strip after masked militants destroyed parts of the border wall. Gazans rushed to buy food, fuel and other supplies that have become scarce because of an Israeli blockade - aimed at stopping rocket attacks from Gaza. Israel has expressed concern at the events at the border and has urged Egypt to restore security there. Correspondents say the breaching of the border is a security concern for Israel, as Egypt is a main source of weapons for the militant groups in Gaza.